J. Ingenhousz's experiment revealed that there was

Options

A. presence of bubbles when an aquatic plant was placed in the dark
B. no presence of bubbles when an aquatic plant placed in sunlight.
C. no presence of bubbles when an aquatic plant placed in dark.
D. both (B) and (C )

Answer

**Step-by-Step Solution:**

1. **Understanding Ingenhousz's Experiment**:
- Joseph Ingenhousz conducted experiments with aquatic plants to study photosynthesis. He placed these plants in different lighting conditions to observe their behavior.

2. **Observation in Light**:
- When aquatic plants were exposed to sunlight, Ingenhousz observed that they released bubbles. These bubbles are primarily oxygen, which is a byproduct of photosynthesis occurring in the presence of light.

3. **Observation in Dark**:
- Conversely, when the same aquatic plants were placed in the dark, Ingenhousz noted that there was no bubble production. This indicates that photosynthesis does not occur in the absence of light.

4. **Conclusion**:
- Based on these observations, Ingenhousz concluded that light is essential for photosynthesis, and without it, the process halts, leading to no oxygen (bubbles) being produced.

5. **Answering the Question**:
- The question asks what Ingenhousz's experiment revealed. The correct answer is that there is "no presence of bubbles when an aquatic plant is placed in the dark."

6. **Final Answer**:
- The correct option is **c**: no presence of bubbles when an aquatic plant is placed in dark.

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